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Ansoft Designer / Ansys Designer 在线帮助文档：

Nexxim Simulator >
Nexxim Component Models >
S-Parameter Elements >
Chain-Based ABCD Element (Netlist Only)

Chain-Based ABCD Element (Netlist Only)

Netlist Format

The chain-based ABCD element has the following Nexxim netlist syntax:

Axxx a1 b1 a2 b2 [CHAIN_PARAM=val] [DELAYHANDLE=val]
+ A_real='expr' A_imag='expr'
+ B_real='expr' B_imag='expr'
+ C_real='expr' C_imag='expr'
+ D_real='expr' D_imag='expr'
+ COMPONENT=chain_based_abcd

a1, a2, b1, and b2 are the nodes attached to the ABCD element.

The entry COMPONENT=chain_based_abcd is required.

**Chain-Based ABCD Element Parameters**
Instance Parameter	Description	Unit	Default
CHAIN_PARAM	Number of identical elements to be chained minus one (zero = one element)	None	0
DELAYHANDLE	0 = state space, 1 = convolution	None	1
A_real, A_imag	Real and imaginary parts of A parameter. The values are entered as expressions in quotation marks	None	Required
B_real, B_imag	Real and imaginary parts of B parameter. The values are entered as expressions in quotation marks	None	Required
C_real, C_imag	Real and imaginary parts of C parameter. The values are entered as expressions in quotation marks	None	Required
D_real, D_imag	Real and imaginary parts of A parameter. The values are entered as expressions in quotation marks	None	Required

Notes

1. The ABCD element is available for use in netlists, but is not supported in the Components window of the Designer Schematic Editor.

2. Nodes a1, a2, b1, and b2 are related by the ABCD parameters according to the following formula:

3. The CHAIN_PARAM entry specifies the number of identical copies (minus one) of the ABCD matrix to be chained (matrix multiplied):

An entry of CHAIN_PARAM=0 (the default) uses one ABCD matrix.

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